28668720 (number)

28668720 is an even 8-digits composite number following 28668719 and preceding 28668721. In scientific notation, it is written as 2.8668720 × 10^7. The sum of its digits is 39. It has a total of 7 prime factors and 40 positive divisors. There are 7241472 positive integers (up to 28668720) that are relatively prime to 28668720.

Interesting facts

Basic properties

Name

Name twenty-eight million six hundred sixty-eight thousand seven hundred twenty

Notation

Scientific notation 2.8668720 × 10^7
Engineering notation 2.8668720 × 10^6

Prime Factorization of 28668720

Prime Factorization 2 × 2 × 2 × 2 × 19 × 15 × 6287

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 3583590
Product of the distinct prime numbers

The prime factorization of 28668720 is 2 × 2 × 2 × 2 × 19 × 15 × 6287. Since it has a total of 7 prime factors.

Most popular turbo-numbers

Basic calculations (n = 28668720)

Multiplication

n×y
n×2 57337440
n×3 86006160
n×4 114674880
n×5 143343600

Division

n÷y
n÷2 14334360
n÷3 9556240
n÷3 7167180
n÷5 5733744

Exponentiation

ny
n2 821895506438400
n3 2.3562692143341E+22
n4 6.7551222350363E+29
n5 1.9366070792203E+37

Nth Root

y√n
2√n 5354.3178837271
3√n 306.05731764099
4√n 73.173204684004
5√n 31.008564427325

Divisors of 28668720

40 divisors

τ Total Divisors 40
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28668719
Sum of the proper positive divisors of n
A Arithmetic Mean 0.025
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 1
Returns the nth root of the product of n divisors
H Harmonic Mean 40
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28668720 can be divided by 40 positive divisors. The sum of these divisors (counting 28668720) is 1, the average is 0.025.

Base conversion 28668720

Base System Value
2 Binary 1101101010111001100110000
3 Ternary 1222221112002110
4 Quaternary 1231113030300
5 Quinary 24314344340
6 Senary 2502245320
8 Octal 155271460
10 Decimal 28668720
12 Duodecimal 9726840
16 Hexadecimal 1b57330
20 Vigesimal 8j3bg0
36 Base36 h2gxc

Cryptographic Hash Functions

md5 937f7439bce767009153b92bde41a4d0
sha1 8d9f4e759ee51b32d4b942ff11823363027d619a
sha256 e19adaae8b47e5200e931f4b16904e5bdb4406b60fb65e40628888ecbefe64c7
sha512 56073c3ea93d8da8c9e1d690a67a7de2b3fbee3206bbcff6a9e62a5220a657353fe0f46f7ba0207ff334ba2f0bb57fc026fdf1c6f0437d8a1295307a1832071f
ripemd-160 113f19e722b09b9252b287f79bbf9e753b15cffe

28668720 as geometric shapes

Circle

Radius = n
Diameter 57337440
Circumference 180130880.27965
Area 2.5820608850453E+15

Sphere

Radius = n
Volume 9.8699174048423E+22
Surface area 1.0328243540181E+16
Circumference 180130880.27965

Square

Length = n
Perimeter 114674880
Area 821895506438400
Diagonal 40543692.639877

Cube

Length = n
Surface area 4931373038630400
Volume 2.3562692143341E+22
Space diagonal 49655679.627966

Equilateral Triangle

Length = n
Perimeter 86006160
Area 3.5589119391597E+14
Altitude 24827839.813983

Triangular Pyramid

Length = n
Surface area 3.5589119391597E+14
Volume 2.7768898995945E+21
Height 13514564.213292